|reply to r81984 |
Re: Really - cell phones don't work in the air ?
Tell that to people who have called from near the summit of mount hood (using a startac phone like Karl's favorite picure), mount rainier, mount baker and mount Shasta thousands of feet above the ground plane and many miles from the nearest cells.
The first ones were 20 years ago when no cell aimed that way now they aim a few "listener" cells for rescue purposes because it's very hard to sell casual weekend climbers on the need to buy or rent a sta. locator recue beacon, when they have a $700 cell phone (they don't understand how the cold and distance will zap even the best cell battery, maybe before they find you.)
r81984Fair and BalancedPremiumReviews:
If a cell phone worked on a 14,000 ft mountain 20 years ago then there was line of site from the phone to the tower and the tower had to of been at a very high elevation also or pointing slightly upward. A rural cell tower could possibly go 20 miles especially 20 years ago when cell towers were more sparse, but in a city a cell tower goes like 1 mile.
I also dont think the cell tower or the mountain was moving at 450 mph.
When flying in a plane even at 5000ft with a cell broadcasting upward you would be out of range of the tower in 15 seconds max.
Cell sites in the country side also broadcast with much more power than in a city. The more dense the cell towers in an area the lower the transmitter power for the cells in that area so they can share frequencies without jamming each other.
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